90231427 has 16 divisors (see below), whose sum is σ = 112244832. Its totient is φ = 71262720.

The previous prime is 90231397. The next prime is 90231457. The reversal of 90231427 is 72413209.

It is an interprime number because it is at equal distance from previous prime (90231397) and next prime (90231457).

It is a cyclic number.

It is not a de Polignac number, because 90231427 - 2¹¹ = 90229379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90231395 and 90231404.

It is not an unprimeable number, because it can be changed into a prime (90231457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16128 + ... + 20989.

It is an arithmetic number, because the mean of its divisors is an integer number (7015302).

Almost surely, 2^90231427 is an apocalyptic number.

90231427 is a deficient number, since it is larger than the sum of its proper divisors (22013405).

90231427 is a wasteful number, since it uses less digits than its factorization.

90231427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37158.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 90231427 is about 9499.0224233865. The cubic root of 90231427 is about 448.5242636823.

The spelling of 90231427 in words is "ninety million, two hundred thirty-one thousand, four hundred twenty-seven".